Machine for setting bung-bushings.



A: L'OWY.

MACHINE FOR SETTING BUNG BUSHINGS.

A. LOWY. MACHlNE FOR SETTING BUNGBUSHINGS.

- APPLICATION FILED n.2, m5. 1,234,680. I Patented-July 24, 1917.

' 2 suzns-suan 2.

UNITED STATES PATENT OFFICE.

ARTHUR LOWY, OF NEWARK, NEW JERSEY, ASSIGNOR T0 NATIONAL BUSH COMPANY,

'- A CORPORATION OF NEW YORK.

MACHINE FOR SETTING BUNG-BUSI-IINGS.

Specification of Letters Patent. Patented J [11y 24, 1917.

Application filed. January 2, 1915. Serial No. 75.

To all whom it may concern:

Be it known that I, ARTHUR LowY, a citizen of the United States,residing at Newark, in the county of Essex and State of New Jersey, haveinvented certain new and useful Improvements in Machines for SettingBung-Bushings, of which the following is a full, clear, and exactspecification.

This invention relates to a machine for setting bung bushings, and hasparticular reference to a novel machine for this purpose whereby metalbushings may be set in barrels much more effectively, firmly and rapidlythan in prior machines employed for this purpose.

The distinctive feature of this invention consists in the manner ofholding the bushing during the flanging operation, and in flanging meansso constructed that the angle of the line of thrust upon the bushingcontinually increases during the flanging operation and the flangingsurfaces move apart to follow the spreading edge of the bead they areforming. With this invention, it is not necessary, in order to hold thebushing against rotation, even in old barrels, to provide it with prongsor to drive nails through its flange. By this invention, separate meansis provided for clamping the bushing firmly to the barrel, independentlyof the flanging devices, and the pressure of the latter while it affectsdoes not determine the holding pressure. This is accomplished bycombining with the rotating flanging devices, a non-rotatable clampingdevice which directly engages the head of the bushing, and which ismovable by the operator to apply any desired main clamping pressure. Theflanging devices are carried by a mandrel which rotates within theclamping head, and these parts are preferably so connected that theflanging pressure can be applied by movingone oppositely to the otherwithout relieving the main clamping pressure.

In the form of the invention shown herein, the machine comprises avertically movable, but non-rotatable clamping head which bears upon andforces the outer end of the bushing firmly into the barrel, and anindependently rotatable and movable mandrel which carries the bushingflanging devices. As herein shown the latter consist of one or morelinks pivoted in a slot ted lower portion of the mandrel, these linksportion of the bushing with the barrel, but

owing to the independent clamping pressure and the varying angle ofthrust, the entire bushing from end to end is .in firm contact with thebarrel. The flanging devices are also so mounted as to be collapsedwithin the mandrel when it is inserted and removed from the bushing, andthis can be done without stopping the rotation of the mandrel. Aconsiderable saving in time is effected by this arrangement, so thatabout double the number of bushings can be set by this machine in agiven time, as compared with prior machines.

The invention will be more fully understood in connection with thedescription of the accompanying drawings, wherein Figure 1 shows themachine in elevation, together with the upper portion of a barrel havinga bushing therein.

Fig. 2 is a detail view showing the position of the parts at thecommencement of the operation.

Fig. 3 is a vertical section in the plane of Fig. 1, showing theposition of parts when the bushing has been set, and

Fig. 4 is a sectional view at right angles to Fig. 3.

The machine is preferably attached to a vertical support as 1, so as togive a clear space below to receive a barrel 2, 8 being a bushing to beset therein. It will be noted that this bushing has no spurs or prongsrequiring tov be first driven into the barrel to prevent rotation whilebeing flanged. The machine consists of a frame 41: carrying a shaft 5driven by pulley 6 and a bevel gear 7 on the end of shaft 5 driving alarger bevel gear 8 on vertical shaft 9, carried in bearings 11, 12. Thevertical shaft 9 is splined to bevel gearS, so that the shaft 9 and theparts driven thereby can be recipro sated vertically, and also allowinga range of adjustment for barrels of different di ameters. The power iscontrolled by a clutch lever 10, controlling a clutch within pulley 6.

The shaft 9 drives the mandrel 13, which bears in a sleeve 1% withinclamping head 15. This head is grooved on its lower end to fit andcenter on the bushing 3, thereby bringing the mandrel 13 and itsassociated parts in proper relation to the end of the bushing which isto be flanged. The head 15 is connected by links 16 to a lever 17 whichlever is pivoted to the frame 1 by link 18 and also carries acounterweight 19, which normally slightly over-balances the head 15 andparts carried thereby. The lever 17 and links 16 are pivoted by pins 55to a collar or guide 56 which slides on shaft 9. This arrangement holdsthe links 16 vertical, and does not interfere with the control ofclamping head 15. In the position shown in Fig. 1, the counter-weight 19has lifted the head 15 through the links 16, so that the lower end 20 ofthe mandrel is outside of the barrel 2. When the lever 17 is presseddownwardly, the head 15, mandrel 1", etc. are lowered, and the range ofmove ment is such that the mandrel can be inserted within the barrel.During these operations of raising and lowering the head 15, the shaft 9of course slides through the gear 8, and can also be rotating.

Inasmuch as the clamping head 15 does not rotate, a special constructionis necessary both to take up the various thrusts produced in expandingthe bushing and also in the application of the expanding force it-. selfto the bushing while the mandrel is rotating. Referring first to thedetails of the structure within the head 15, the sleeve 1% moves up anddown with the mandrel 13, but the latter can turn in the former. Thesleeve 14 has a rack 21 which is engaged by a pinion 22 on the end of alever 23, the lever being pivoted at 24 on the head 15. The Hangingpressure is controlled entirely by this lever 23, which is independentof the clamping lever 17. The upper end of the sleeve 14 is providedwith a ball race 25, carrying balls 26 interposed below the upper ballrace 27 carried by the mandrel 13. 28 is a washer behind the upper ballrace 27 and bearing against a shoulder on the mandrel, so that thewasher 28 and race 2'? ro tate with the mandrel and the race 25 remainsstationary with the sleeve 14:. 29 is a roller mounted on the clampinghead 15 which engages a flattened surface 30 on the sleeve 1% to preventrelative rotation while permitting relative longitudinal movement. 31 isan oil cup which feeds the bearings of the mandrel through oil duct 32and permits the excess oil to pass down between the mandrel and thesleeve 1%, so as to automatically oil the fianging devices. 33 is asharp pointed pin carried by the clamping head 15 which is intended toengage in the upper flange of the bushing to assist in preventingmovement between the bushing and the clamp when the flanging pressure isapplied to the lower end of the bushing. This pin is not essential andcan be omitted. The necessity of using spurs or prongs on the bushingitself, which require to be driven into the wood of the barrel beforethe flanging operation can becommenced, is avoided by this non-rotatingclamping apparatus operated by lever 17 independently of the flangingpressure controlled by lever 23.

The flanging apparatus is mounted at the lower end of the mandrel, andcomprises a pair of links 36 pivoted on the mandrel at 37. The linkshave short ends 38, which engage with a projection 39 carried by themandrel to limit the expansion of the rollers, Fig. 3 showing therollers in maximum expanded position. The mandrel is slotted above thepivot pin 37 as at 410 so that the links 36 and the flanging rollers -11carriedthereby can be swung within, or substantially within, thediameter of the mandrel, so that it canbe inserted and withdrawn throughthe bushing.

Fig. 2 shows in detail the initial position of the links and rollers asthe flanging operation commences, and by comparing this position withthe final position shown in Fig. 3, it will be seen that as the bushingis flanged and expanded by lever'23 while the mandrel is being rotated,the angle formed by the line between the rollers and the pivot pin 37,and the'axis of the mandrel constantly increases, and thus the bushingis both stretched or spun and flanged. This angle is hereinafterreferred to, as theangle of thrust, and constitutes one of the featuresof distinction of the present invention over prior machines intended forthe same purpose, wherein the angle of thrust produced does notcontinuously vary during the fiang ing operation.

The periphery of the rollers 6L1 is curved as herein shown, though theinvention is not restricted to this particular curvature.

To collapse and expand the rollers, the links 36 are connected at theirinturned upper ends by links 43 to a block 4% sliding within the mandrelslot, and this block is connected by a rod to disposed axially of themandrel to a lever e6 pivoted at 47 on.

the upper end of sleeve 14. The upper end of the rod 15 is provided witha screw isbetween which and a cross-pin 50 is provided an expansionspring 51. The spring 51 is adjusted by screw as so as to lift the rod45 and thereby position the rollers 41 to properly engage the bushing atthe commencement of the Hanging, as shown in Fig.

2. hen the flanging has been completed,

as in Fig. 3, the lever 23 is lifted until it strikes lever 46 as inFig. 1,. thus automatically collapsing the fianging devices. It will beseen that lifting of the lever 23 first lowers the mandrel so that therollers 41 can clear thebushing, and further movement of the lever 23collapses the flanging devices as stated.

a The lever 46, is connected to collar 54, within which rotates crosspin 50 mounted in a slot in the mandrel and the slotted arms of lever 46are pivoted to this collar 54, as seen in Fig. 4. The spring 51 thusproduces a yielding pressure of the rollers 41 on the end of the bushingand insures proper initial positioning thereof, this spring not beingnormally set to collapse the rollers 41 wholly within the mandrel 13.

In operation, the bushing 3 is positioned directly under the mandrel 13,lever 17 is depressed carrying with it the clamp and mandrel and thelinks 36 are collapsed to pass through the bushing. This collapsing ofthe links may be accomplished either by pressing the handle 23 againstthe dog 46, or by simply forcing the mandrel through the bushing andallowing the upper edge of the bushing to engage the links and pressthem together lifting rod 45 and its associated parts. It should here benoted that the weight of the mandrel and its surrounding sleeve normallyholds the handle 23 in a vertical position. Then the clamp 15 engagesthe outer end of the bushing the flanging means is positioned wellwithin the inner end of the bushing and the links have been sprung apartand are held by the spring 51 in position to present the fiangingrollers in proper relation to the edge to be turned. The head 15 andassociated parts constitute gripping means which engage with the bushingand through links 16, pre vent it from being rotated by the flangingdevices. This clamping or gripping pressure is controlled by lever 17The lever 23 is now moved. down, lifting sleeve 14 and mandrel 13 untilthe flanging rollers 41 engage the bushing, as in Fig. 2. The flangingpressure is then applied through lever 23, and it will be seen that theflanging pres sure is independent of the main clamping pressure and isseparately controllable. This is a decided improvement of this machineover prior machines, in that the bushing is positively held againstrotation. Thereby. the use of spurs or nails to hold the bushing againstrotation is avoided, which reduces the cost of the bushing, and alsosaves time in setting. There is also the advantage of being able to seta bushing just as tightly in an old barrel, as in a new one. Heretofore.it has been found that spurs or nails in bushings do not always hold inweak wood, and their rotation cuts and loosens all the wood in theirpath of rotation, and sometimes necessitates boring another bung By thismachine, owing to the independent clamping and fianging means, bushlngsare much more firmly, quickly and tightly set, than with prior machines.In fact, they may be set with such pressure that the holes appear tohave been countersunk before the bushing was inserted. Not only are thebushings so, tightly set as to avoid even slight leakage of gas, astends to occur unless the bushing is very tightly set, but the forcesare applied in such a way that an even flanging and expansion of thebushing is secured without either upsetting the bushing longitudinallyor causing it to split. If the bushing is upset longitudinally, theopening is obstructed and difficulty is experienced in either drivingthe bung, or making it tight, while if the bushing splits, it will notbe gas tight, and will have to be removed before a new one can be set,which is a matter requiring considerable time and expense. By thetripping means herein pro-. vided, the fianging means can be trippedwhile the machine is running, thus permitting the hushed barrel to bewithdrawn and another barrel to be replaced and bushed without the delaydue to stopping the machine to insert and withdrawthe Hanging devices.

The invention is not to be restricted to the precise details andarrangement of parts above described, as various modifications andchanges in the form and arrangement may be made without departing fromthe scope of the appended claims.

Having thus described my invention, what I declare as new and desire tosecure by Letters Patent of the United States is 1. In a machine forsetting bushings in barrels, the combination with a movable clampadapted to engage the flange of a bushing inserted in a barrel, of meansholding the clamp against rotation relatively to the barrel andpreventing relative rotation of the bushing and clamp when clampedtogether, flanging means passable through the bushing to engage theinner end thereof, means for rotating said flanging means, and means forapplying Hanging pressure during rotation of said flangingmeans.

2. In a machine for setting bushings, the

combination with clamping means for engaging the outer end of a bushinginserted in a' barrel, of means for holding the clamping means inengagement with the bushing against rotation, a rotatable mandrel withinsaid clampin means carrying Hanging means adapts to engageand flange thein nor end of the bushing by rotary pressure, and means interposedbetween the mandrel and the clamping means for applying flangingpressure by outward movement of the mandrel relatively to the clampingmeans.

3. In a machine for setting bushings, the combination of a clamp adaptedto be pressed against the bushing to hold it against rotation, rotatablehanging means, means for drawing said clamping means and flanging meanstoward each other to flange the bushing, and means for independentlycontrolling the pressure of said clamping means during the hangingoperation.

4. In a machine for hanging bushings, the combination with a support, ofa clamp engaging the flange of a bushing, means between said support andsaid clamp for hold-- ing said clam-p against rotation and pressing saidclamp into engagement with the bushing, a rotatable flanger carried bysaid clamp and engaging the inner end or the bushing, and means forpressing said flanger in a direction opposite to said clamp to flangethe bushing.

5. In a machine for fi'anging bushings, the combination with a clamp, ofa support, means between said clamp and said support for pressing saidclamp against said bushing and holding said clamp and bushing againstrotation, a mandrel supported by said clamp, hanging means carried bysaid mandrel opposite said clamp, and means for moving said mandreltopress said hanging means toward said clamp and flange the bushing.

6. In a bush-ing fi'anger, the combination with a clamp, of meansindependent of both the bushing and the work for holding the clampagainst rotation, a hollow rotary mandrel adapted to be insertedthrought the bushing, means for moving said mandrel axially through saidclamp, fianging means carried by the inserted end of said mandrel, and arod passing through said mandrel to control said hanging means.

7. A bushing setting apparatus compris-- ing a rotatable mandrelcarrying Hanging means adapted to engage and flange the inner projectingend ofa bushing'inserted in a barrel, a non-rotatable clamping memberadaptedto engage the outer flange of the bushing, a thrust bearing onthe mandrel, a sleeve between the thrust bearing and the clamping memberhaving means for effecting relative longitudinal movement between theflanging means and the clamping means, and means for rotating thehanging means independently of said clamping means and said sleeve". I

8. In a bushing danger, the combination with a rotatable and axiallymovable mandrel adapted to be inserted througl'i a bushing, of separateb'ackwardly directed thrust arms pivoted to the ii'userted end orsaidoted totlre inserted end of said mandrel and v pressed into hangingengagement with the inner end of the bushing by backward movement ofsaid mandrel, and resilient means holding said: arms in an intermediateposition for yielding movement in either direction.

110. In a machine for hanging bushings, the combination withnon-rotatable clamping means adapted to engage the outer flanged end ofa bushing inserted in a barrel, or rotatable mandreladapted to engageand flange the inner projecting end of a bushing, a plurality of thrustlinks separately pivoted at the inner end or the mandrel and directedbackward-1y, hanging means on the ends of said thrust links on gaging,said inner end of the bushing, andmeans for rotating and moving themandrel axially to flange the bushing while continually varying theangle between the line of thrust and the mandrel axis 11. In a machinefor Hanging bushings, the combination with a rotatable mandrel, ofrelatively movable thrust links-pivoted thereon at one end" and carryinghanging means at their other ends,- resilient means holding said. linksin position to engage the bush ing, and means for moving said mandrelaxially to spread: said links and increase the angle of hanging thruston the bushing.

12. In a machine for hanging bushings, the combination with a rotatableand axially movable mandrel adapted to be inserted within a bushing, ofpivoted thrust links at the inserted end of said mandrel, means at theends of said links normally in position to engage the bushing, and meanswhereby axial movement of said mandrel will collapse said thrust linkswithin said mandrel.

1 3. In a machine for Hanging bushings, the combinationwith a:non-rotatable clamp, of means; for pressing said clamp intoongagementwith the bushing, a rotatable mandrel carried by said clamp and passingthrough said bushing, fianging' arms freely pivoted to said mandrelopposite said clamp, and means for pressing said mandrel toward saidclamp toflange said bushing and expand said arms.

14-. The combination with means for clamping" a tube againstlongitudinal move ment, of rotatable mandrel within said clamping meansand relatively longitudinally movable therein, fianging means can riedby said mandrel movable relatively thereto to continuously vary theangle. of

thrust during the fianging operation, and means for effecting relativelongitudinal movement between the clamping means and the mandrel, saidmeans comprising a rack and pinion for simultaneously moving the mandreland clamp in opposite directions.

15. The combination of a mandrel, links pivoted adjacent the end of saidmandrel, flanging means carried by said links, said links and fiangingmeans being collapsible within the mandrel, clamping means surroundingsaid mandrel, means for oppositely moving the flanging and clampingmeans, and means for simultaneously moving the flanging and clampingmeans.

16. The combination with flanging means comprising a mandrel, means forrotating said mandrel, and flanging links pivoted adjacent the end ofsaid mandrel, said links being collapsible within the mandrel, ofclamping means, means for oppositely moving the flanging and clampingmeans, and means for simultaneously moving the flang- -ing and clampingmeans.

17 The combination with a driving gear, of a shaft splined thereto, amandrel carried by said shaft and movable therewith, links pivotedadjacent the end of said mandrel, flanging means carried by said links,said links and flanging means being collapsible within the mandrel,clamping means surrounding said mandrel, means for oppositely moving thefianging and clamping means, and means for simultaneously moving theflanging and clamping means.

18. The combination with a rotatable slotted mandrel carrying linkspivoted in slotted mandrel carrying links pivoted in.

said slot, of flanging means carried by said links'and movable with thelinks into and v out of said slot, and means for controlling said linkscomprising a rod movable within the mandrel and pivoted at one end tosaid links, the other end of said rod being connected to relativelystationary actuating means, and means for partially counterbalancingsaid rod.

20. The combination with a rotatable and longitudinally movable mandrel,of collapsible fianging means adjacent one end of said mandrel, a sleevesurrounding said mandrel, a thrust bearing between said sleeve andmandrel, a relatively movable clamping member exterior of said sleeve,means engaging both the clamping member and said sleeve to effectsimultaneous opposite movement of said mandrel and clamping member, andguiding means between said sleeve and said clamping member.

In testimony whereof I affix my signa-' ture, in presence of twowitnesses.

ARTHUR LOWY. Witnesses:

J OSEPH D. CoNNoLLY, Jr., K. G. LE Ann.

Copies of this patent may be obtained for five cents each, by addressingthe commissioner of Patents, Washington, D. C.

